Employees work at an assembly line of China National Heavy Duty Truck Group Co., Ltd. in Jinan, capital of east China's Shandong Province, April 28, 2020. The leading heavy-duty truck maker of China has made timely adjustment of the supply chain after the outbreak of COVID-19, which enabled it to seize the opportunity of market recovery. At present, it has received orders of more than 40,000 trucks. (Xinhua/Wang Kai)